Abstract:
This study focuses on applying seismic isolation to low-rise rural buildings. Low-cost Layered Bonded Scrap Tire Pads (LBSTP) were made. Nine rubber dumbbell specimens were tested for uniaxial tension. Vertical compression stiffness and ultimate vertical compression tests were performed on 21 LBSTPs with different first shape factors (S
1) and layer counts. Results show that the constitutive parameters and shear modulus G of scrap tire rubber material can be obtained by using the first-order Ogden model. Vertical compression stiffness increases with S
1, and decreases as the number of layers increases. Even after the steel mesh and canvas layers break, the LBSTP still has some load-bearing capacity. The laminated structure has little effect on the vertical mechanical properties of LBSTP. Compared with code formula, the proposed vertical stiffness correction formula predicts the vertical stiffness of LBSTP more accurately. It can guide the selection of vertical stiffness in LBSTP seismic isolation design. This will help promote the application of LBSTP in seismic isolation technologies to rural buildings.